Housing and individual demographic files 


Paru le :Paru le17/06/2024

The purpose of setting up statistical databases on housing and individuals is to take advantage of information from the tax administration on taxes and built properties so as to improve our knowledge of the housing stock and resident demographics.

Fidéli may be summed up as a rational assembly of administrative data, and is designed to fulfill demographic statistics purposes.

The directory contains:

  • tax data: housing tax file, built property file, personal tax files and tax return file. These data, assembled by means of tax identifiers on households and premises, constitute Fidéli's core. In particular, they contain demographic information on individuals and household structure and household incomes;

  • additional contextual data to enrich the tax information with variables to better describe the addresses where people live: contact details, membership of an IRIS or a district of the city, presence of communities or administrative domiciliation;

  • information on the large amounts of income declared, as well as on the amounts of social benefits received by households. Such information is available at the individual level (when relevant) as well as household's, and for the latter, rest on the Filosofi datasource.

This project builds on the observation that administrative data are increasingly used in the production of public statistics, as supported by the European Statistics Code of Practice.

In France, however, administrative data are less used for housing or demographic statistics than for employment and income or business statistics. This justifies the idea of first focusing on a certain type of administrative data (fiscal), then enlarging the scope to all administrative data that are deemed to be used more widely in the near future for establishing official statistics.

A first prototype, the Répertoire statistique des logements (RSL), was developed in 2013. The numerous methodological studies conducted on this prototype confirmed the interest and quality of the source in order to carry out statistical studies on housing and its occupants. Population counts are consistent with those provided by the population census, with the exception of counts for small aggregates.

The final treatment (Fidéli), set in March 2016 and implemented for the first time on data for 2018, supplements the demographic information with monetary variables describing the major aggregates of income declared to the tax authorities but also of social benefits received by households.

Administrative data